Exact SKU 80408 • researched buying guide
UGREEN 80408 20m HDMI 2.1 Fibre Optic Cable, 8K60/4K120
A 20m directional active optical HDMI cable for a source rack, projector, television or conference display positioned across a room. Exact gallery artwork confirms Source and Display ends, 48Gbps, 8K60 and 4K120; install it in the marked direction and test the full route before concealing it.
Fast purchase decision
Overview
Best suited to
Equipment rack to a television across a room; AV receiver to a ceiling or rear-of-room projector.
Choose it for
20m reach, full-size hdmi type-a male to full-size hdmi type-a male and 8K60 / 4K120.
Do not assume
The long-run rating still depends on both ports and every device in the chain. Active optical electronics also make connector direction and careful routing mandatory.
Verified exact-model highlights
Key features
Exact length
20m, selected for the stated route—not a generic family length.
Connector fit
Full-size HDMI Type-A male to full-size HDMI Type-A male
Verified video target
Up to 8K at 60Hz or 4K at 120Hz
Signal capacity
Up to 48Gbps
Direction
Directional active optical cable: Source plug to sender; Display plug to screen
Feature scope
HDR10 signalling, eARC, active optical long-run transmission, resistance to electromagnetic interference in the optical path.
Exact-SKU guidance
How to read the video rating
Maximum capability is not a guarantee for every setup
The long-run rating still depends on both ports and every device in the chain. Active optical electronics also make connector direction and careful routing mandatory.
- Verified exact-SKU target: Up to 8K at 60Hz or 4K at 120Hz.
- Published capacity: Up to 48Gbps.
- The source, display and selected ports must all support the requested mode.
- Receivers, switches, splitters, capture devices, docks, adapters, wall plates and extra cables may lower the result.
What the cable can carry
Audio and feature support
HDR10 signalling
The cable can transport the listed signal only when the source, content and receiving equipment support it.
eARC
This is a pass-through capability; it must be available and enabled across the complete HDMI chain.
active optical long-run transmission
This is a pass-through capability; it must be available and enabled across the complete HDMI chain.
resistance to electromagnetic interference in the optical path
This is a pass-through capability; it must be available and enabled across the complete HDMI chain.
no separate power adapter listed
This is a pass-through capability; it must be available and enabled across the complete HDMI chain.
A cable does not decode Dolby or DTS audio, create HDR, generate extra frames or add ARC/eARC to an ordinary HDMI port. Those functions come from compatible devices, content and settings.
Exact-SKU guidance
Construction and routing
Active optical build
Active optical HDMI cable with optical fibre, tinned-copper elements, cotton yarn, aluminium-Mylar shielding, aramid reinforcement and a PVC outer shell.
- Directional active optical cable: Source plug to sender; Display plug to screen
- Plan gentle bends and protect the connector housings from pulling force.
- Do not infer an in-wall, plenum, LSZH or fire rating unless it is printed on the supplied cable.
- Test the exact intended mode before any route becomes difficult to access.
Practical examples
Use scenarios
Home entertainment
Equipment rack to a television across a room
Work and presentation
AV receiver to a ceiling or rear-of-room projector
Gaming and media
Presentation source to a conference-room display
Audio or convenient routing
Gaming source to a distant compatible screen
Connect • configure • verify
Setup and usability guidance
- Step 1: Identify the connector marked Source and attach it to the sending device.
- Step 2: Attach the connector marked Display to the television, monitor or projector; reverse installation will not work.
- Step 3: Test picture, HDR and audio on the floor before routing through conduit or fixed furniture.
- Step 4: Use broad curves and protect the active connector housings from pulling or impact.
- Step 5: Enable the correct enhanced HDMI input mode and verify the negotiated resolution and refresh rate.
After setup, open the television or monitor signal-information page. It is the quickest way to confirm the actual resolution, refresh rate and HDR state received by the display.
Exact-SKU guidance
Compatible devices and systems
Match the connector and the port capability
- Consoles, media players, PCs and AV receivers with full-size HDMI output
- TVs, monitors and projectors with full-size HDMI input
- Compatible eARC television and soundbar/receiver systems when ports and settings match
- Earlier HDMI equipment at its own lower mutually supported mode
Operating systems normally need no cable driver. A computer may still require the correct graphics driver and display settings, while a USB-C-only device needs a separate video-capable adapter or dock.
Avoid the common mismatch
Check before buying
- The required physical route really suits 20m, with enough slack but no tight coil or tension.
- Both connector ends match the intended ports: Full-size HDMI Type-A male to full-size HDMI Type-A male.
- The requested mode stays within the exact-SKU guidance: Up to 8K at 60Hz or 4K at 120Hz.
- The long-run rating still depends on both ports and every device in the chain. Active optical electronics also make connector direction and careful routing mandatory.
- Every adapter, receiver, switch, splitter, wall plate or extra cable in the path supports the same video, HDCP and audio requirements.
- A concealed route does not require a safety rating that has not been verified for this cable.
Scope and limitations
What this product does
- Provides a 20m physical HDMI connection using full-size hdmi type-a male to full-size hdmi type-a male.
- Carries compatible digital video and audio within the verified 8K60 / 4K120 guidance.
- Passes supported functions such as HDR10 signalling, eARC, active optical long-run transmission, resistance to electromagnetic interference in the optical path when the complete system supports them.
- Uses active optical transmission for the long route when installed Source-to-Display.
What this product does not do
- It does not upscale content, create HDR, decode audio, generate frames or improve the native quality of a display.
- It does not add a resolution, refresh rate, ARC/eARC feature or HDCP version to a port that lacks it.
- It does not convert USB-C, DisplayPort, Mini/Micro HDMI, DVI or VGA.
- It does not work in reverse and is not a passive copper cable.
Care and installation practice
What to do
- Check the exact SKU and length on the order and received package before installation.
- Confirm Source and Display orientation before routing the cable.
- Hold the connector housing—not the cable body—when plugging or unplugging.
- Test the intended video and audio mode with a direct connection before adding other devices.
What not to do
- Do not force a misaligned HDMI plug or pull a connector out by the cable.
- Do not reverse the Source and Display ends or make tight bends in the optical cable.
- Do not sharply kink, knot, crush, staple, pinch under furniture or expose the cable to heat or moisture.
- Do not assume the cable upgrades the HDMI capability of a source, display, adapter or receiver.
Read before use
Warnings and limitations
Verified ceiling
Source and Display direction is mandatory.
Installation caution
No in-wall, plenum, LSZH or fire rating is claimed; verify the physical marking and local rules before concealed installation.
Not a converter
Do not sharply bend, crush, pull or coil the cable tightly around the active connector housings.
Route and rating
No separate power supply is listed, but the active electronics rely on compatible HDMI-port power.
Exact-model reference
Technical specifications
| Brand | UGREEN |
|---|---|
| SKU | 80408 |
| Product type | Directional active optical HDMI cable |
| Cable length | 20 metres |
| Connectors | Full-size HDMI Type-A male to full-size HDMI Type-A male |
| Direction | Directional active optical cable: Source plug to sender; Display plug to screen |
| Verified video guidance | Up to 8K at 60Hz or 4K at 120Hz |
| Published bandwidth / rate | Up to 48Gbps |
| Construction | Active optical HDMI cable with optical fibre, tinned-copper elements, cotton yarn, aluminium-Mylar shielding, aramid reinforcement and a PVC outer shell. |
| Feature support | HDR10 signalling, eARC, active optical long-run transmission, resistance to electromagnetic interference in the optical path, no separate power adapter listed |
| HDMI capability stated for exact SKU | 48Gbps; up to 8K60 or 4K120 |
| Cable architecture | Directional active optical cable (AOC) |
| Core / reinforcement | Optical fibre with tinned-copper elements, cotton yarn and aramid reinforcement |
| Outer construction | PVC shell with aluminium-Mylar shielding |
| External power | No separate adapter listed; active electronics use HDMI-port power |
In the box
Package contents
- 1 × UGREEN 80408 20m directional active optical HDMI cable
Devices, adapters, cable-management accessories and any other cables shown in use images are not included. Confirm SKU 80408 and 20m on the received item.
Tap a question to expand
Product-specific FAQ
What is the verified video target for SKU 80408?
Up to 8K at 60Hz or 4K at 120Hz. The long-run rating still depends on both ports and every device in the chain. Active optical electronics also make connector direction and careful routing mandatory.
Is this cable directional?
Yes. Source connects to the sending device and Display connects to the receiving screen. Reverse installation will not work.
Does the cable create a higher resolution or refresh rate?
No. It carries a compatible HDMI signal; it cannot add a mode, upscale content or improve a display panel.
Which devices can I connect?
Use it with compatible full-size HDMI equipment such as Consoles, media players, PCs and AV receivers with full-size HDMI output; TVs, monitors and projectors with full-size HDMI input; Compatible eARC television and soundbar/receiver systems when ports and settings match.
What determines the actual picture mode?
The lowest-capability source, port, display, content format, setting and intermediate device controls the final mode.
Does it need a separate power adapter?
No separate adapter is listed. Its active connector electronics draw operating power through compatible HDMI ports.
Can I route it inside a wall or ceiling?
No concealed-installation rating is claimed here. Check the physical cable marking and local requirements before any in-wall or ceiling route.
What should I check if there is no picture?
Reseat both ends, select the correct input, try a direct connection, lower the mode and verify every device and setting in the chain.
How should I care for the cable?
Use gentle curves, avoid crushing or pulling, grip connector housings, and keep the cable dry and away from heat.
What is included?
One UGREEN 80408 20m directional active optical HDMI cable. Connected equipment and adapters are not included.
